What could cause the starter not to work in a 1987 Dodge Dakota 4 cylinder?

Make sure battery is charged. Clean all wire connection at battery & at the starter. Make sure trans is in neutral or park completely or clutch pedal is completely depressed (check if neutral switch is ok) If no response from these check out solenoid, starter 7 innition switch & all wires/connectors in starting circuit. Here is another thing to look for-make sure the ground strap is connected to block & frame/body. Check the fuse & relay. They are located in the fuses box on the fender well in the engine compartment